Cutting machine



April 1o, 192s.

L. E. LENTZ CUTTING MACHINE Filed April 30, 1925 2 Shlee'fQs-Sheet l ,ZW/29266 Zien gwoegnrm) I after appear. f

l machine. Y

'Patented Apr. 1928.Y A. Y

-f-UNIT'fEeDL FSTArEfSf-rerm CUTTNG MACHINE.

Applicationl area v'April so, 192.3. 'serial No," 635,662.11'y 'n Y This invention vrelates `tovcutters, and more particularly, [to a roll cutter especially designed foi-cutting paper 'or other rolls. The. object ot' theinventionis to produce simple, inexpensive' and effective cutting machine Whichvmayfbe operated .by handto quickly and cleanly sever a roll,;as, jfor fin'- s'tance, aroll' of carbon vor otl1`er1p'aper.' A subordinate object isr to produce a ma-V chine of this character in which the cut-ting elements may be quickly andeasily detached forl sharpening or replacement, read1lyjre-v tained in `inactivepositions during the replacement or adjustmentl ofjthe'paper roll orl other'work element, and inst-antly're'- leased for ope-ration when the roll' hasV been placed in position for cutting. Y

" Other fandsubordinate objects will herein- Inthe drawings:A l, y

' a Fig. 1 is'a perspective view. of myV cutting 'Fig'. 2 is an end elevation thereof with the 'cutting blades in inoperative v'position but showingin dotted lines the operative posi.-

.tion ofthe blades and the released positions y of the blade retaining cams.

- machine with the ig. 3 is a longitudinal section through the ted lines. i

' Fig. et is an end elevation of the machine with the cutting head removed, and

F ig. 5 is a perspective view partly broken away of the work holder or roll trough.

In the drawings, 1 indicates a work holder in the form of a trough of any suitable ma teria-l, preferably metal, adapted to receivea work element 2, as for instance, a roll of carbon paper or the like, which itis'desiredto cut into lengths or to trim to I'J'redetermined dimensions. The side walls 1zL of the trough converge toward the bottom "2 so'that the roll when placed in the trough lwill be wedged between the walls thereof and securely held against Vrotation by slight pressure thereon during the cutting operation.v

Screwed or otherwise securedto the end of the holder 1 is a circular' head support or` track 3 upon the periphery of which travel the flanged supporting rollers 4 mounted on stud journals 5, spaced equidistantly'on a cutang head e. The head e is .in the form of a circular plate. designed to be rotated in any Y suitablemanner upon the track 3, as, forinstance, manually through the applicationv of Y paper roll indicated in dot- ,llforce tofa handle projecting from` "thel blades 8 Apivoted, at their vvouter ends@ adjzbv cent to the periphery ot' the' head andhav# ,semmai A. y

WARD Lnnrz, OFHAIRRISBURQ; PnNNsyLvaN-m,-assre1\ion To Erinr'orr; VFISHER COMPANY, A CORPORATIONjorvnELAwAnE;

l i'ront side of tl'ie'cutting head. Also mount-.

f ed on .the'fron't side ofthe head 6 are the cut- 1 ting toolsin the form/'of a pair of cutting ingtheirfront ends provided with cutting edges 10.` y These cutting edges 10, -as vclearly shown 1n Figure2', Zare formed by grindn'igi v.away the inner adjacent Acorner 'ofthe blades,

8, 4which results inVA cutting-*edges disposed i at any angle [to vrthe blades.` HkrIyhis serves to* cutting operation. krIhe pivots of the each other rwith respect/to thefaxis of; the

head andthe lblades normally occupyfsub-.K stantiallyparallel vplanes;tangentialto the inner periphery `11 Vof the head.v This ,pref

head 6 and between thecutting edges 10 jot theblades.

maintain an 'eiiective relation ,betweenv `roll and thecutting edgesaspthe blades 'swing toward the axis'ot the carbon roll during the -f vblades Surel located dia-metrically 'opposite' sentsthe free ends oi the blades in such rela i y tive positions that theroll2 held by the 'y trough 1 mayeXtend through the track 3and VV so 'v The blades are held in the norf mal position described by'retainingdevices inthe form of pivoted cams 12.,v

Vhen unopposed by the cams 12 l ends of the blades are urged inwardly to-l ward the axis 'of the head by springs 13 secured at their opposite ends to head' and `blades respectively, as clearly.. shown@ y .inFi`g.2;

It will now appear roll 2'is merely placed in the trough'and eX- tendedthrou'gh l.the .head 6 Withf the cuttingedges of the blades in the plane of the ,desired cut; Thefcams 12 arefthenr swung to release the blades audto allowthefspringsf that in. operation the "50.

13 to draw thercutting'edges 10L against-the surfaceot the vpaperrollor other'workelef ment and to automatically-ifeed the blades,

It will, Vof course, the understood` that in i with-just they necessary `force to effect `the the broader aspects ofthe' invention it is'im material how the'relative motion of the roll l and cuttersvv is secured, as an obvious -variation of the invention .would be to holdthe" chine' has beendescribed asa Y roll j cutter v l' head stationary'andv rotate the roll eithery .lwithror Without rotating the'holder.l It will. also be apparent that while this cuttingmaf and has been partleularlyVdeslgnedfor lche would he equall7 eeient for the Cutting of various other iWork element-s andis. ini no` VWay to he nnderstoodfasbemg lnnlrted to the 4specified' use;

In` other words, While it isfbellier'recltlatY the construction, operation and advantages ofthe deselbed structure wlllbeclearly'apparent,l Iedesiretoj expressly reserve thefright tov elleet such Vchanges, l'nodlcatlons 1' or ya- 'ofthe' proteetrofn prayed.

What l clarn is Vfl.'V A" Cutting Vmachine ineludfng Worlij Vheldflng ti'ogh. a circular track secured. at

onefend thereof, and aff'iuttiljlg headihaying aefentralVopenngandprevided at onev eidelwltlrflanged'gulde rollers engaglng the C11'- @outer ends Vand *having their inner fendel l0-V V' i dated in "diarnetreal:oppositionto theCent/er of thelheladv'andfformed with terminal ent-V tng'edges disposed at an angle with resleet to, the maar-e fthereof, f 'e entra'lly' ertiired enstelligi head having Aflanged rollers engaging the traek thel inner-side of a palier vof cutclg blades hlnged at thelr outerends on the outer face of Jche head and having'termnal site sidesv olf thea-Xsof the head,y spiral blades agansb ehe resistedellell of; the' springs. 3. vA outtlng. I.maehnl-nee...glnellrdlng Vayf'genwally yaperturedr rocary headg a pair offending blades 'pvvotedv an ,oufer' ends@` V Ithereon. andhavlng cnttlngr edges, at'ihelr 1n` ner;y adjacent corners located dlalnetrlleale ly opposite the axis vof fthetheach, spiral springe each, attachedial; 'tys'oppestge ends tothe head an,dtoaloladeat a peint nearer 1th@ r'Cutting Bed flleleeeed imposti@ t0 present ,thef springjsubstafnfcallyai; right anglesfto the-blade in onepqitlonoftheblade,

and 1a" Plfof riveted devees Carried with@ head to erge lthe. bla'desn opposition 1to the sprngs'and to retain thelnrvvheny not .inacton" d' 1 ,l Y ,p1-

Y. ,Inieetmony hereof I hereunto allxniy signature. f

LAWRENCE Eni/Winn 

